A mourner lays a candle next to flowers in the Soubise housing estate on September 25, 2020, in Saint-Ouen, north of Paris, as they take part in a commemorative march in memory of Sofiane and Tidiane, two youths who were shot dead in the city amid a backdrop of drug dealing. - Sofiane, 25, and Tidiane, 17, were shot dead in a Saint-Ouen basement in the night of September 14 to 15. (Photo by GEOFFROY VAN DER HASSELT / AFP)